I hope this is the appropriate forum for feedback on the tutorials. If not, I apologize.

The tutorial on the span pages does not work. It does not contain an actual example that integrates with the code. It presents the code in isolation without weaving it into an example. One is left to wonder where and how to integrate the array data into the code.

Also, the tutorial presents two variables ($firstresult and $lastresult) that aren't used later on.

I do appreciate the effort, but perhaps someone can ammend this tutorial or write another tutorial that works.